<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>div和span</title>
</head>

<body>
  <!-- div：大盒子 -->
  <div>这是div标签</div>
  <div>这是div标签</div>
  <!-- span：小盒子 -->
  <span>这是span标签</span>
  <span>这是span标签</span>
</body>

</html>